Isaac "Biz" Stone is one of the most successful entrepreneurs of the 21st century. He is co-founder of Twitter, one of the most popular communication media of the world that has changed the way people communicate. Biz went all the way from a debt-ridden nerd to the founder and voice of Twitter. Previously, Biz helped build other popular social media services Xanga, Blogger, and Odeo. After launching the journaling service Xanga in 2000, Biz went on to publish two books about the origins and social significance of blogging. In 2003, Google invited Biz to join a recently acquired Blogger.com team at its Silicon Valley headquarters in a full-time, senior role. Biz helped relaunch the service and grow Blogger significantly worldwide. He left Google in 2005 to rejoin the startup world. Stone is a native of Boston, Massachusetts and teaches an annual master class at Oxford's Saïd Business School. In the autumn of 2008, Stone debated and won at Oxford Union against the proposition, "The Problems of Tomorrow Are Bigger Than The Entrepreneurs of Today" along with his esteemed team-mates, including Reid Hoffman, founder of LinkedIn. Serving as an advisor to start-ups such as answer community Fluther.com, travel service Trazzler.com, which he co-founded, content encouragement service Plinky.com, and the non-profit organisation Justgive.org, among others, allows Biz to share much of what he has learned over the past decade. In 2014 he launched his latest start-up Jelly. He has been named Nerd of the Year by GQ, one of most influential people in the world by TIME and one of Vanity Fair’s Top Ten Most Influential People of the Information Age. Stone has published two books about blogging, Blogging: Genius Strategies for Instant Web Content (2002) and Who Let The Blogs Out? (2004). In addition to his long running personal blog, Stone has published an op-ed piece in The Atlantic. In 2014 his autobiography Things A Little Bird Told Me was published.